Field test and semi-analytical simulation of unsaturated road subgrade in various water content subjected to a heavy duty truck

doi:10.1016/j.soildyn.2021.106667

	Field test and semi-analytical simulation of unsaturated road subgrade in various water content subjected to a heavy duty truck
	Lu, Zheng 1; Tang, Chuxuan 1,2; Duan, Yahui 3; Fang, Ran 4; Yao, Hailin 1; Guo, Shuan 5
刊名	SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
	2021-05-01
卷号	144 期号:-页码:12
关键词	Field test Unsaturated soil Dynamic response Stiffness matrix method Analytical simulation
ISSN号	0267-7261
DOI	10.1016/j.soildyn.2021.106667
英文摘要	Field test is the most direct and essential way to evaluate subgrade dynamic responses, which is of great importance in designing and ensuring long-term subgrade performance. Many researchers have performed field tests considering the dynamic responses of subgrade. However, in the previous tests, the water content of the soil, which decides the mechanical properties of unsaturated soil, is rarely considered. In this paper, the dynamic responses of subgrade in different saturations are investigated by both field tests and analytical simulations. The vertical stress and acceleration tested in the field under different water contents, depths, truck speeds, and axle weights are presented. The result shows that as the water content in the subgrade rises, vertical stress variation is insignificant, while the amplitude of acceleration increases. According to the distribution of water content of the subgrade, a double-layer unsaturated soil model was proposed using the stiffness matrix method. The comparison between field test and simulation results shows that the agreement is good.
资助项目	outstanding youth fund of Hubei Province[2017CFA056] ; Natural Science Foundation of China[41672312] ; Natural Science Foundation of China[41972294]
WOS研究方向	Engineering ; Geology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000684926400003
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/27675]
专题	中科院武汉岩土力学所
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Wuchang Univ Technol, Sch Urban Construct, Wuhan 430023, Peoples R China 4.Cent & Southern China Municipal Engn Design & Res, Wuhan 430010, Peoples R China 5.Hunan Commun Res Inst Co Ltd, Changsha 410015, Peoples R China
推荐引用方式 GB/T 7714	Lu, Zheng,Tang, Chuxuan,Duan, Yahui,et al. Field test and semi-analytical simulation of unsaturated road subgrade in various water content subjected to a heavy duty truck[J]. SOIL DYNAMICS AND EARTHQUAKE ENGINEERING,2021,144(-):12.
APA	Lu, Zheng,Tang, Chuxuan,Duan, Yahui,Fang, Ran,Yao, Hailin,&Guo, Shuan.(2021).Field test and semi-analytical simulation of unsaturated road subgrade in various water content subjected to a heavy duty truck.SOIL DYNAMICS AND EARTHQUAKE ENGINEERING,144(-),12.
MLA	Lu, Zheng,et al."Field test and semi-analytical simulation of unsaturated road subgrade in various water content subjected to a heavy duty truck".SOIL DYNAMICS AND EARTHQUAKE ENGINEERING 144.-(2021):12.